Heat and humidity to return this afternoon in the wake of this morning’s severe thunderstorms. Heat advisory in effect until 7:00 pm CDT for heat indices as high as 105. Steamy afternoon could fuel more thunderstorms by tonight.

Weather

(Getty)

WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-
LA SALLE-KENDALL-GRUNDY-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-
NORTHERN COOK-CENTRAL COOK-SOUTHERN COOK-NORTHERN WILL-
SOUTHERN WILL-EASTERN WILL-LAKE IN-PORTER-NEWTON-JASPER-BENTON-
INCLUDING THE CITIES OF ROCKFORD, BELVIDERE, CRYSTAL LAKE, 
ALGONQUIN, MCHENRY, WOODSTOCK, WAUKEGAN, BUFFALO GROVE, 
MUNDELEIN, GURNEE, ROCHELLE, OREGON, BYRON, DIXON, DEKALB, 
SYCAMORE, AURORA, ELGIN, NAPERVILLE, WHEATON, DOWNERS GROVE, 
LOMBARD, CAROL STREAM, OTTAWA, STREATOR, LA SALLE, MENDOTA, 
MARSEILLES, OSWEGO, YORKVILLE, PLANO, MORRIS, COAL CITY, MINOOKA,
KANKAKEE, BOURBONNAIS, BRADLEY, PONTIAC, DWIGHT, FAIRBURY, 
WATSEKA, GILMAN, PAXTON, GIBSON CITY, EVANSTON, DES PLAINES, 
SCHAUMBURG, PALATINE, NORTHBROOK, CHICAGO, CICERO, OAK LAWN, 
OAK PARK, LA GRANGE, CALUMET CITY, OAK FOREST, LEMONT, 
ORLAND PARK, PARK FOREST, JOLIET, BOLINGBROOK, PLAINFIELD, 
MOKENA, CHANNAHON, MANHATTAN, WILMINGTON, CRETE, PEOTONE, 
BEECHER, GARY, HAMMOND, MERRILLVILLE, PORTAGE, VALPARAISO, 
CHESTERTON, ROSELAWN, KENTLAND, MOROCCO, RENSSELAER, DEMOTTE, 
FOWLER, AND OXFORD
1254 PM CDT WED AUG 11 2021 /154 PM EDT WED AUG 11 2021/

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT /8 PM EDT/ THIS
EVENING...

* WHAT...HEAT INDEX VALUES UP TO 100 TO 105 EXPECTED.

* WHERE...NORTH CENTRAL ILLINOIS, NORTHEAST ILLINOIS, AND 
  NORTHWEST INDIANA.

* WHEN...UNTIL 7 PM CDT /8 PM EDT/ WEDNESDAY.

* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY WILL CAUSE HEAT
  ILLNESSES TO OCCUR IN FEWER THAN 30 MINUTES WHEN IN DIRECT
  SUNLIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DRINK PLENTY OF FLUIDS, STAY IN AN AIR-CONDITIONED ROOM, STAY OUT
OF THE SUN, AND CHECK UP ON RELATIVES AND NEIGHBORS. YOUNG
CHILDREN AND PETS SHOULD NEVER BE LEFT UNATTENDED IN VEHICLES
UNDER ANY CIRCUMSTANCES.

TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN
POSSIBLE RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR
EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT
STROKE. WEAR LIGHTWEIGHT AND LOOSE FITTING CLOTHING WHEN
POSSIBLE. TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL
SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT
REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE
OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION.
HEAT STROKE IS AN EMERGENCY! CALL 9 1 1.

&&

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